1. Core Materials & Structural Design
- Composite tanks – inner steel shell with outer FRP layer; all‑fiberglass double‑wall tanks also available.
- Double‑wall structure significantly enhances compressive and seismic resistance.
- Outer fiberglass layer effectively resists soil and chemical corrosion.
- Structural design extends equipment service life from the foundation.
2. Design Life & Industry Standards
- Service life – typically 5 to 10 times that of standard single‑wall tanks.
- Industry specifications set design life generally exceeding 30 years.
- Advanced composite materials can achieve 40 to 60 years of safe service.
- Proper maintenance ensures maximum lifespan potential.
3. Environmental Impact & External Corrosion Factors
- Complex underground environment – soil moisture, salinity/alkalinity, and fluctuating groundwater levels affect tank integrity.
- Outer FRP layer offers excellent corrosion resistance, but prolonged exposure still poses risks.
- External loads (e.g., vehicle traffic) are key physical damage factors.
- Environmental conditions significantly limit actual service life.
4. Monitoring, Maintenance & Routine Inspections
- Online interstitial leak monitoring – provides 24/7 real‑time status tracking.
- Strictly implement regular manual inspections and equipment checks.
- Promptly repair anti‑corrosion coating damage or sealing system failures.
- Scientific maintenance maximizes long‑term safe and stable operation.